can't wait for these tables!

 

I am interested in the tables when I get back from the stan.

 

Well, it's good to see that the Trifecta tunes are keeping up with the HP Tuners. I thought, with all the horsepower smack talk by the HP Tuner-guys on here, that the Trifecta car was gonna get pulled.

 

I'm pretty sure I have the tune also (got tuned last week), mine pulls to 26 psi and stays there, only exception is 2nd gear is boost limited to 22 psi initially and then builds to 26 psi to help with clutch slippage.. 3rd-4th instant 26 psi. By the way my dyno graph shows the Trifecta tune plotted almost exactly the same as the GMS1 tune (dyno'd both tunes), nice and smooth build up, peaks, rolls off and then drops around 6.3k rpms, of course with more horse power and torque though.

Also a side note: I took the Dejon BPV spring out today (I had it since 600 miles on my car, I have 4.5k now). Things I noticed is that the Factory BPV spring does seems to build boost back faster between shifts and smoother. The Dejon BPV spring made the boost build slower between shifts, then POW in your face! comes on very hard.

I haven't decided which I like better yet.

 

He will once BYT is running the same boost level. Both cars on 24 psi BYT would win everytime.

 

What you're feeling might be because the spring causes the turbo to slow down more because it bypasses later than the stocker (the reason for the sound difference), and then once it spools from a slower speed to operating speed you feel the sudden pull.

I had it installed for a while and noticed the same hesitation.

 

I think what it proved the most after thinking about it a day or 2 is this:

AFR DOES make power. I had less mods, boost and boost dropped off faster. BUT I'm running .88 lambda vs his .82 lambda and the races were almost dead even. Which is why I want to install the pill again and match his boost then see what the outcome is. Im not saying Im going to put bus lengths on his car but I think I will nose him out with teh same amount of boost and .88 lambda If the races end up the same, I will be trying some tuning on .85 lambda lol....

 

Term,

you just don't give up do you? If I was closer to you, I would run you to see the outcome!

I am at 24psi but not holding 24 psi til redline and still running along side, if not a slight edge in the mid range to my car, with a 22 psi leaner hptune.

and nick, you have the stock IC, I have an upgraded one, that is the only diff between our cars, and even you said that the IC are more than fine stock, so for all purposes we have the same mods.

I say the trifecta is just fine against a custom hptuner with a leaner afr

 

And I agree, I will say I went into it thinking WAY cocky and was taken back by how close the runs were and the fact that he would pull me thru the mid pretty good!

Edit: I only spike 22 for a split second, mostly hold 20-21 thru the mid and taper to 17ish up top. If you look at my log in my sig you can see the spike to 22 is extremely short lived

 

and nick, i admit, i went in thinking i was going to loose real bad!

but its all in fun.

 

Even if you weld the WG shut the boost level will fall below 22 psi by 6100-6200 rpms. That is why the power always drops off some up top.

 

I agree with that too, def was fun!!!

 

There is a big midrange torque and HP Difference at 24psi. All will fall off to ~22 psi by 6200 even if they were running 30 psi in the midrange. With no pill I spike 22 psi but it holds only 240 Kpa (20 psi) right after the very short spike. It falls to 18-19 psi up top. Basically across the board there is a 2-3 psi difference and the turbo flows 36-37 lbs/min at 24 psi and 34 lbs/min at 22 psi. I am interested to see the results with both of you at 24 psi.

 

My boost never dropped off according to my boost gauge, solid 26 psi at wot till he let off the gas at 6.5k. Maybe we are talking about 2 different things here or I'm just misunderstanding what you are saying (knowing me its the latter)? I do have the gm upgraded sensors, I don't know if that has anything to do with why my peak boost stays pegged instead of peaking then dropping like some?

 

The gauge is a calculated value not actual. Not matter what you do the stock turbo's efficiency level drops off up top. I have closed all airflow off to the line that goes to the WG on my car so it would open the WG at all and the pressure does fall off up top even when you take away the factory boost solenoid and the WGs control. Spikes 28-30 psi at the lower RPMs but it falls to 22 psi by 6100-6200. What I am trying to say is the stock turbo cannot hold 26 psi actual at 6500 rpms even if you welded the WG shut so it would never open.

 

I just dont see that being possible, it is WAY out of steam around 6K. Edit: this was for HHRSouth.

 

Makes a little more sense now

 

Term, are you catted or catless?

I've got catted and have been wondering if leaning it out to y'alls extent could possibly overheat my cat.

 

You won't overheat it unless you are doing 5th gear WOT pulls. Or a bunch of FULL 4th gear pulls one after another.

 

It was very honest of you to say this. I appreciate your integrity.

 

pm me. i've got something new for you.

 

mine wil hold 22 till redline and i hve mech gauge but in 4th it hold 26 why that

 

It holds 26psi to 6500 rpm?

 

Just got my car tuned by Jason Shreves with trifecta,out of st louis mo,did an amazing job,and my car runs amazing now! check him out.

http://www.trifectaperformance.com/dealers.aspx

 

Catless. If you are running a metallic substrate bullet cat like the Hahn catted DPs have you should have no problems. Stock cats would be ok unless you do 0-160 pulls all the time LOL.